Telemarketer to engage lapsed customers and update crm system

We have just moved offices and we are looking for someone to work through our CRM system contacting every previous, current and prospective customer to let them know about our change of address then making sure their contact details are correct, they are aware of our services and we are talking to the right people.

This will be mostly done over the phone although customers may ask for an email follow-up.

Once the correct person has been contacted our CRM system will need to be updated if required.